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GB Patent: GB-485,323
Improvements relating to precision grinding machines
Patentee: John Cyril Jones (exact or similar names) - Altrincham, England USPTO Classifications: Tool Categories: Assignees: Churchill Machine Tool Co., Ltd. - Altrincham, England Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Applied: Apr. 14, 1937 Granted: May 18, 1938 Patent Pictures: Espacenet patent Report data errors or omissions to steward Joel Havens "Vintage Machinery" entry for Churchill Machine Tool Co., Ltd.

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